<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 按钮 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <!-- 
                        模糊查询实现
                        1、双向绑定分页对象中的query属性
                        2、搜索按钮绑定getGoodsList，根据query获取对应的数据
                        3、clearable 清空当前文本框数据
                        4、clear事件，清空文本框可刷新全部数据
                     -->
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddPage">添加商品</el-button>
                </el-col>
            </el-row>

            <!-- 表格 -->
            <el-table :data="goodsList" border stripe>
                <!-- 索引列 -->
                <el-table-column label="#" type="index"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name"></el-table-column>
                <el-table-column label="商品价格(元)" prop="goods_price" width="95px"></el-table-column>
                <el-table-column label="商品数量" prop="goods_number" width="70px"></el-table-column>
                <el-table-column label="创建时间" prop="add_time" width="140px">
                    <!-- 创建作用域插槽，利用时间过滤器过滤时间 -->
                    <template slot-scope="scope">
                        {{scope.row.add_time | dateFormat}}
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="130px">
                    <template slot-scope="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit"></el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeGoods(scope.row.goods_id)"></el-button>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页 -->
            <!-- background：页码添加背景 -->
            <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[5, 10, 15, 20]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>

<script>
export default {
    data(){
        return {
            // 分页查询参数
            queryInfo: {
                query: '',
                pagenum: 1,
                pagesize: 10
            },
            // 商品列表
            goodsList: [],
            // 商品列表总数
            total: 0
        }
    },
    created(){
        this.getGoodsList();
    },
    methods: {
        // 获取商品列表
        async getGoodsList(){
            const {data:res} = await this.$http.get('goods',{
                params: this.queryInfo
            });

            if(res.meta.status !== 200){
                this.$message.error("获取商品列表失败!");
            }

            this.goodsList = res.data.goods;
            this.total = res.data.total;

            this.$message.success("获取商品列表成功!");
            console.log(res.data);
        },
        // 当分页数据条数改变时，修改分页参数对象
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize;
            this.getGoodsList();
        },
        // 当前页码发生改变时，修改分页参数对象
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage;
            this.getGoodsList();
        },
        // 删除商品
        async removeGoods(id) {
            const confirmResult = await this.$confirm('操作将永久删除该商品，是否继续?','提示',{
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)

            console.log(confirmResult);
            if(confirmResult !== 'confirm') {
                return this.$message.info("已取消删除");
            }

            const {data:res} = await this.$http.delete('goods/'+id);
            
            if(res.meta.status !== 200) {
                return this.$message.error("删除商品失败!");
            }

            this.$message.success("删除商品成功!");
            this.getGoodsList();
        },
        // 跳转添加商品页
        goAddPage(){
            this.$router.push("/goods/add");
        }
    }
}
</script>

<style lang="less" scoped>

</style>
